I would have to agree. I don't watch NY and Miami but it seems as if they have more freedom when dealing with romance. Personally, it seems that CSI is more serious. They are just usually so intense that throwing romance into the mix would seem out of place. Maybe it's because it was the pilot of the CSI series or maybe it's just a trend that they enjoy following. I personally can go without romance on CSI. I don't really think it's necessary. Whether its slash or hetero pairings, if they aren't going to do it well and if the quality isn't going to be there, then I would rather they not dive into it. Just my opinion.